Walker



FIG. 1 is a perspective view showing an exemplary embodiment of our new walker design;

FIG. 2 is a front view thereof;

FIG. 3 is a back view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is a bottom view thereof; and,

FIG. 8 is a perspective view thereof of the exemplary embodiment.

It should be noted that, pursuant to 37 C.F.R. § 1.152 and MPEP § 1503.02, Part III, broken, dashed, or phantom lines have been used throughout the drawings to illustrate inherent but unclaimed features of our walker design, which features are expressly not claimed as part of said design, are shown strictly for context, and are unrelated to any indication of the relative importance of such features. 

CLAIM The ornamental design for a walker, as shown and described. 